Desk with vertically moving top plate

ABSTRACT

Provided is a desk ( 1 ) with a vertically moving top plate having a top plate ( 4 ), leg bodies (leg parts) ( 2 ) disposed on a floor surface and configured to support the top plate ( 4 ) to raise and lower such that it is able to be raised and lowered, and a raising and lowering mechanism unit (a raising and lowering mechanism) ( 5 ) configured to raise and lower the top plate ( 4 ), wherein a concave section ( 469 ) opening downward is formed in the top plate ( 4 ), and the concave section ( 469 ) is formed to accommodate a socket portion ( 11   a ) of a power source tap ( 11 ).

TECHNICAL FIELD

The present invention relates to a desk with a vertically moving topplate capable of vertically changing a top plate height according to ademand of an office worker in a working space such as an office, apublic facility, or the like.

Priority is claimed on Japanese Patent Application No. 2015-014845,filed Jan. 28, 2015, the content of which is incorporated herein byreference.

BACKGROUND ART

In a working space such as an office, a public facility, or the like, ingeneral, desks are arranged to provide working areas to office workers.In such desks, top plate heights at which work is facilitated greatlydiffer according to body type, gender, preferences, or the like, ofoffice workers. However, since general desks having fixed top plateheights cannot cope with the above-mentioned circumstances, in therelated art, a desk with a vertically moving top plate capable ofvertically changing a top plate height is provided (for example, seePatent Document 1 to Patent Document 5).

When such a desk with a vertically moving top plate is used, a workingarea having a top plate height according to a demand of an office workercan be provided, and a load to a body of the office worker can bereduced while improving work efficiency.

CITATION LIST Patent Document [Patent Document 1]

-   Japanese Patent No. 3371959

[Patent Document 2]

-   Japanese Patent No. 3391285

[Patent Document 3]

-   Japanese Registered Utility Model No. 3164739

[Patent Document 4]

-   Japanese Unexamined Patent Application, First Publication No.    2014-113505

[Patent Document 5]

-   Japanese Unexamined Patent Application, First Publication No.    2014-140753

SUMMARY OF INVENTION Technical Problem

Incidentally, in the case in which a wiring of an electronic deviceinstalled on a top plate of a desk with a vertically moving top plate isconnected to a power supply socket installed on a floor or a wall of aworking space and exposed to a space below the top plate, when the topplate is raised and lowered, the wiring of the electronic device belowthe top plate is deformed or moved according to the raising and loweringof the top plate.

For this reason, when wiring of the electronic device is performed,consideration needs to be given to wiring that is deformed or movedaccording to the raising and lowering of the top plate not being hookedby an article such as a wagon or the like installed below the top plate.In particular, when a plurality of electronic devices are installed onthe top plate, wiring of these devices takes time and labor.

On the other hand, when a socket portion of a power source tap (OA tap)is attached to a back side of the top plate and the wiring of anelectronic device installed on the top plate of the desk with avertically moving top plate is connected to the socket portion of thepower source tap, since hardly any of the wiring of the electronicdevice is exposed in the space below the top plate, in particular, onthe floor surface, the wiring of the electronic device is not deformedor moved according to raising and lowering of the top plate. However, ifthe socket portion of the power source tap protrudes downward from aback surface of the top plate and the top plate approaches or comes incontact with an article such as a wagon or the like installed below thetop plate when the top plate is lowered, the socket portion of the powersource tap may be sandwiched between the top plate and the article anddamage the power source tap or the article. In addition, when the socketportion of the power source tap protrudes downward from a back side ofthe top plate, a user may come in contact with the socket portion of thepower source tap.

Here, the present invention has an object of providing a desk with avertically moving top plate capable of preventing a power source tapinstalled below a top plate from coming in contact with an article suchas a wagon installed below the top plate or a user.

Solution to Problem

In order to achieve the aforementioned objects, a desk with a verticallymoving top plate according to a first aspect of the present invention isa desk with a vertically moving top plate having a top plate, leg partsdisposed on a floor surface and configured to support the top plate toraise and lower such that it is able to be raised and lowered, and araising and lowering mechanism configured to raise and lower the topplate, wherein a concave section opening downward and configured toaccommodate a socket portion of a power source tap to which anelectronic device is able to be connected is formed in the top plate.

In addition, in the first aspect of the present invention, since theconcave section configured to accommodate the socket portion of thepower source tap is formed in the top plate, a wiring of the electronicdevice installed on the top plate can be connected to the socket portionof the power source tap. Then, as the socket portion of the power sourcetap is accommodated in the concave section, the socket portion of thepower source tap can be prevented from protruding from a lower surfaceof the top plate.

For this reason, even when the top plate approaches or comes in contactwith an article such as a wagon or the like installed below the topplate when the top plate is lowered, the socket portion of the powersource tap is not sandwiched between the top plate and the article, andthus, the power source tap or the article can be prevented from beingdamaged.

In addition, since the socket portion of the power source tap does notprotrude from the lower surface of the top plate, it is possible toprevent a user from coming in contact with the socket portion of thepower source tap.

Further, the socket portion of the power source tap represents a portionin which a socket into which a plug of an electronic device is insertedis installed, and the wiring portion of the power source tap representsa wiring configured to supply power to the socket portion.

In addition, in the desk with a vertically moving top plate according toa second aspect of the present invention, the socket portion of thepower source tap may be magnetically attached on an inner surface of theconcave section.

As the above-mentioned configuration is provided, the socket portion ofthe power source tap can be easily fixed into the concave section. Inaddition, a position of the socket portion of the power source tap canbe easily changed.

In addition, in the desk with a vertically moving top plate according toa third aspect of the present invention, the inner surface of theconcave section may have a bottom surface section parallel to the floorsurface on which the desk with a vertically moving top plate isdisposed, and side surface sections extending downward from the bottomsurface section, and the socket portion of the power source tap may bemagnetically attached on at least one of the bottom surface section andthe side surface sections.

When the socket portion of the power source tap is magnetically attachedon the bottom surface section and when magnetically attached on the sidesurface sections, an orientation of the socket portion of the powersource tap is changed. For this reason, as the socket portion of thepower source tap is magnetically attached on at least one of the bottomsurface section and the side surface sections to match a shape of theconcave section or the socket portion of the power source tap, thesocket portion of the power source tap does not protrude from theconcave section, and the socket portion of the power source tap can beaccommodated in the concave section as a whole.

In addition, in the desk with a vertically moving top plate according toa fourth aspect of the present invention, a hole section through which awiring of an electronic device passes in an upward/downward directionmay be formed in the top plate, and the hole section may be disposed ata position overlapping the concave section when seen in a plan view.

As the above-mentioned configuration is provided, the wiring of theelectronic device on the top plate can easily reach the concave section,and simplification of the wiring can be achieved. For this reason, thewiring of the electronic device can be easily performed while improvingappearance of the wiring of the electronic device.

In addition, in the desk with a vertically moving top plate according toa fifth aspect of the present invention, the concave section may extendsuch that at least one end portion in an extension direction reaches anedge portion of the top plate, and a wiring portion of the power sourcetap may be extracted to the outside of the top plate from the edgeportion of the top plate through the concave section.

As the above-mentioned configuration is provided, since the wiringportion of the power source tap does not hang down from the top plate,the wiring portion of the power source tap can be prevented from beinghooked by an article such as a wagon or the like installed below the topplate when the top plate is raised and lowered. In addition, since thewiring portion of the power source tap does not hang down from the topplate, it is possible to prevent a user from coming in contact with thewiring portion of the power source tap.

Advantageous Effects of Invention

According to the desk with a vertically moving top plate of the presentinvention, it is possible to prevent the power source tap installedbelow the top plate from coming in contact with an article such as awagon or the like installed below the top plate or a user.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view showing an example of a desk with avertically moving top plate according to an embodiment of the presentinvention from above.

FIG. 2 is a perspective view showing the example of the desk with avertically moving top plate according to the embodiment of the presentinvention from below.

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1.

FIG. 4 is an enlarged view of a rear side of FIG. 3.

FIG. 5 is a side cross-sectional view of a top plate of the desk with avertically moving top plate according to the embodiment of the presentinvention.

FIG. 6 is a side cross-sectional view of a front end portion of the topplate of the desk with a vertically moving top plate according to theembodiment of the present invention.

DESCRIPTION OF EMBODIMENTS

Hereinafter, a desk with a vertically moving top plate according to anembodiment of the present invention will be described with reference toFIGS. 1 to 6.

Further, in the following description, a lengthwise direction of a longside of a top plate 4 having a rectangular shape in a desk 1 with avertically moving top plate shown in FIGS. 1 and 2 is aleftward/rightward direction, and a lengthwise direction of a short sideof the top plate 4 is a forward/rearward direction.

As shown in FIGS. 1 and 2, the desk 1 with a vertically moving top plateaccording to the embodiment has a pair of leg bodies (leg parts) 2disposed spaced apart from each other at left and right sides, aconnecting member 3 (see FIG. 2) configured to connect the pair of legbodies 2, and the top plate 4 having a flat plate shape, supported onthe leg bodies 2 and disposed on the connecting member 3, and the topplate 4 is configured to be vertically raised and lowered as raising andlowering mechanism units 5 are provided on the pair of leg bodies 2.

In addition, a control unit 6 (see FIG. 2) configured to control thepair of raising and lowering mechanism units 5 together as describedbelow is installed on the desk 1 with a vertically moving top plate, andfurther, an operation unit 7 (see FIG. 1) configured to input a raisingand lowering operating signal is installed on the raising and loweringmechanism unit 5.

Each of the leg bodies 2 is configured to have a lower section supportbody 8 (see FIG. 1) disposed on a floor surface, an upper sectionsupport body 9 disposed above the lower section support body 8 andconfigured to support a lower surface of the top plate 4, and theraising and lowering mechanism unit 5 configured to telescopicallyconnect the lower section support body 8 and the upper section supportbody 9.

Since the lower section support body 8 has a plate shape extendingforward and rearward, as adjusters 81 are installed at front and rearend portions, a height from the floor surface can be finely adjusted.

Since the raising and lowering mechanism unit 5 is constituted by theknown configuration in the related art, as a plurality of square tubes51 having different dimensions are relatively movably fitted to eachother, the raising and lowering mechanism unit 5 is telescopicallymovable by driving of a drive mechanism accommodated therein in theupward/downward direction. Accordingly, the raising and loweringmechanism unit 5 telescopically connects the lower section support body8 and the upper section support body 9.

The upper section support body 9 is disposed to extend in theforward/rearward direction of the top plate 4 and supports a lowersurface of a side end portion of the top plate 4 in theleftward/rightward direction. The upper section support body 9 isintegrally fixed to an upper end portion of the raising and loweringmechanism unit 5 by welding or the like such that a front end side 9 athat is a front side of the top plate 4 with respect to the raising andlowering mechanism unit 5 is lengthened and a rear end side 9 b that isa rear side of the top plate 4 is shortened.

As shown in FIG. 3, the top plate 4 is formed in a rectangular plateshape, and has a core 41 obtained by processing a metal plate such as asteel plate or the like, a surface material 42 such as a melamine boardor the like configured to cover an upper surface, side end surfaces inthe leftward/rightward direction and a front end surface of the core 41,and a cover member 43 configured to cover a rear end portion of the core41.

The core 41 has an upper core 45 disposed at an upper side thereof, andthree lower cores 46, 47 and 48 disposed below the upper core 45.

The upper core 45 has a horizontal plate section 45 a formed in arectangular plate shape and having a plate surface that is a horizontalsurface, a front plate section 45 b continuous with an edge portion of afront side of the horizontal plate section 45 a, extending toward thefront side in an inclined downward direction, and having a tip portionside folded rearward, side plate sections 45 c continuous with left andright edge portions of the horizontal plate section 45 a and extendingdownward, a rear plate section 45 d continuous with a rear edge portionof the horizontal plate section 45 a and extending downward, and a lowerplate section 45 e extending forward from a lower end portion of therear plate section 45 d.

Then, in the upper core 45, an upper surface of the horizontal platesection 45 a, the front plate section 45 b and outer surfaces of theside plate sections 45 c and 45 c are covered by the surface material42, and an outer surface of the rear plate section 45 d is covered bythe cover member 43.

The three lower cores 46, 47 and 48 are disposed at intervals in theforward/rearward direction. Among the three lower cores 46, 47 and 48,the core disposed in the rearmost section in the forward/rearwarddirection is a first lower core 46, the core disposed in an intermediatesection is a second lower core 47, and the core disposed in the foremostsection is a third lower core 48.

As shown in FIG. 4, the first lower core 46 is a member extending in theleftward/rightward direction and formed in a cross-sectional shapehaving a concavo-convex portion in the leftward/rightward direction as awhole. The first lower core 46 has a first vertical plate section 461disposed in the rearmost section and having a plate surface that is avertical surface directed in the forward/rearward direction, a firsthorizontal plate section 462 extending forward from a lower end portionof the first vertical plate section 461 and having a plate surface thatis a horizontal surface, a second vertical plate section 463 extendingupward from a front end portion of the first horizontal plate section462 and having a plate surface that is a vertical surface directed inthe forward/rearward direction, a second horizontal plate section 464extending forward from an upper end portion of the second vertical platesection 463 and having a plate surface that is a horizontal surface, athird vertical plate section 465 extending downward from a front endportion of the second horizontal plate section 464 and having a platesurface that is a vertical surface directed in the forward/rearwarddirection, a third horizontal plate section 466 extending forward from alower end portion of the third vertical plate section 465 and having aplate surface that is a horizontal surface, a fourth vertical platesection 467 extending upward from a front end portion of the thirdhorizontal plate section 466 having a plate surface that is a verticalsurface directed in the forward/rearward direction, and a fourthhorizontal plate section 468 extending forward from an upper end portionof the fourth vertical plate section 467 and having a plate surface thatis a horizontal surface.

The first vertical plate section 461, the second vertical plate section463, the third vertical plate section 465 and the fourth vertical platesection 467 are disposed at substantially the same height and formed insubstantially the same height dimension.

Then, the first horizontal plate section 462 and the third horizontalplate section 466 are disposed at substantially the same height, and thesecond horizontal plate section 464 and the fourth horizontal platesection 468 are disposed at substantially the same height.

The first lower core 46 is fixed to the upper core 45 in a state inwhich the upper surfaces of the second horizontal plate section 464 andthe fourth horizontal plate section 468 abut the lower surface of thehorizontal plate section 45 a of the upper core 45. Then, when the firstlower core 46 is fixed to the upper core 45, the rear surface of thefirst vertical plate section 461 abuts the front surface of the rearplate section 45 d of the upper core 45, and a rear portion of the lowersurface of the first horizontal plate section 462 abuts an upper surfaceof the lower plate section 45 e of the upper core 45.

Then, a concave section 469 surrounded by the second vertical platesection 463, the second horizontal plate section 464 and the thirdvertical plate section 465 and extending in the leftward/rightwarddirection to open downward is formed in the first lower core 46. Asocket portion 11 a (a portion in which a socket into which a plug of anelectronic device (not shown) is inserted is installed) of a powersource tap 11 configured to supply power to the electronic deviceinstalled on the top plate 4 can be accommodated in the concave section469.

In the embodiment, since the first lower core 46 is formed of a materialhaving a magnetic property such as steel or the like, when a magnet isinstalled in the socket portion 11 a of the power source tap 11, thesocket portion 11 a of the power source tap 11 is configured to bemagnetically attached on the second vertical plate section 463, thesecond horizontal plate section 464 and the third vertical plate section465 that constitute the concave section 469. In the embodiment, thelower surface of the second horizontal plate section 464 corresponds toa bottom surface section of the concave section 469, and facing surfacesof the second vertical plate section 463 and the third vertical platesection 465 correspond to side surface sections of the concave section469.

In FIG. 4, the socket portion 11 a of the power source tap 11magnetically attached on the second horizontal plate section 464 isshown by a solid line, and the socket portion 11 a of the power sourcetap 11 magnetically attached on the second vertical plate section 463and the third vertical plate section 465 is shown by a dotted line.

Further, the socket portion 11 a of the power source tap 11 accommodatedin the concave section 469 is disposed not to protrude downward from thelower surface of the top plate 4 (the lower surfaces of the firsthorizontal plate section 462 and the third horizontal plate section 466of the first lower core 46).

Returning to FIG. 3, the second lower core 47 is a member extending inthe leftward/rightward direction, and formed in a substantiallyhat-shaped cross-sectional shape in the leftward/rightward direction asa whole. The second lower core 47 has a first horizontal plate section471 disposed in the rearmost section and having a plate surface that isa horizontal surface, a first vertical plate section 472 extendingdownward from a front end portion of the first horizontal plate section471 and having a plate surface that is a vertical surface directed inthe forward/rearward direction, a second horizontal plate section 473extending forward from a lower end portion of the first vertical platesection 472 and having a plate surface that is a horizontal surface, asecond vertical plate section 474 extending upward from a front endportion of the second horizontal plate section 473 and having a platesurface that is a vertical surface directed in the forward/rearwarddirection, and a third horizontal plate section 475 extending forwardfrom an upper end portion of the second vertical plate section 474 andhaving a plate surface that is a horizontal surface.

The first and second vertical plate sections 472 and 474 are disposed atsubstantially the same height and formed in substantially the sameheight dimension. Then, the first horizontal plate section 471 and thethird horizontal plate section 475 are disposed at substantially thesame height.

Then, the second lower core 47 is fixed to the upper core 45 in a statein which upper surfaces of the first horizontal plate section 471 andthe third horizontal plate section 475 abut the lower surface of thehorizontal plate section 45 a of the upper core 45.

The third lower core 48 is formed in substantially the same shape as thesecond lower core 47, and has a first horizontal plate section 471, afirst vertical plate section 472, a second horizontal plate section 473,a second vertical plate section 474 and a third horizontal plate section475 that are substantially the same as the first horizontal platesection 481, the first vertical plate section 482, the second horizontalplate section 483, the second vertical plate section 484 and the thirdhorizontal plate section 485 of the second lower core 47.

Then, the third lower core 48 is fixed to the upper core 45 in a statein which the upper surfaces of the first horizontal plate section 481and the third horizontal plate section 485 abut the lower surface of thehorizontal plate section 45 a of the upper core 45.

Further, the first horizontal plate section 462 and the third horizontalplate section 466 of the first lower core 46, the second horizontalplate section 473 of the second lower core 47 and the second horizontalplate section 483 of the third lower core 48 are disposed atsubstantially the same height.

In addition, in the embodiment, wiring insertion holes 49 (holesections) passing through upper and lower surfaces of the top plate 4are formed in both left and right sections of the top plate 4 on therear side at overlapping positions when seen in a plan view of theconcave section 469 of the top plate 4. In the embodiment, two wiringinsertion holes 49 are formed with an interval therebetween in theleftward/rightward direction.

The wiring insertion holes 49 are configured such that a connectingwiring cable 121 of an electronic device such as a display or the likeplaced on the top plate 4 can be guided to the concave section 469 ofthe top plate 4. Then, the connecting wiring cable 121 guided to theconcave section 469 can be connected to the socket portion 11 a of thepower source tap 11 disposed in the concave section 469. In theembodiment, the socket portion 11 a of the power source tap 11 ismagnetically attached at a position on the concave section 469 that doesnot overlap the wiring insertion hole 49.

Further, in the embodiment, a wiring portion 11 b of the power sourcetap 11 is disposed in the concave section 469 and extends to one endportion in the leftward/rightward direction to be extracted to theoutside of the top plate 4 and is connected to a power supply socket(not shown) installed in a working space through the vicinity of the legbodies 2.

In addition, as shown in FIG. 1, the operation unit 7 is installed on afront edge portion of the top plate 4 of the side of the lower surface.The operation unit 7 has operating buttons configured to input raisingand lowering operating signals to the raising and lowering mechanismunit 5. Then, a user can drive both of the raising and loweringmechanism units 5 and change arbitrarily the height of the top plate 4by operating the operation unit 7 and sending a raising and loweringoperating signal.

As shown in FIG. 2, the connecting member 3 extends in theleftward/rightward direction, both of end portions thereof are attachedto the pair of upper section support bodies 9 by welding or the like,and thus, the upper section support bodies 9 of the pair of leg bodies 2are connected. The connecting member 3 is disposed in front of the firstlower core 46 of the top plate 4. Accordingly, the concave section 469of the top plate 4 opens downward without overlapping the connectingmember 3 in the upward/downward direction.

In addition, a space section 31 opening downward is formed in theconnecting member 3, and the control unit 6 is fixed to and accommodatedin the space section 31 by a fastening screw or the like.

The control unit 6 is configured to control both of elevating operationsof the raising and lowering mechanism units 5 installed on the pair ofleg bodies 2, and in the embodiment, is connected to the socket portion11 a of the power source tap 11 disposed in the concave section 469 ofthe top plate 4 to be operated when electric power is suppliedtherefrom.

A unit-connecting wiring cable (not shown) configured to connect thecontrol unit 6 and the pair of raising and lowering mechanism units 5 isconnected to the control unit 6 separately from a power supply cable 61,and further, a wiring cable (not shown) for an operation unit of theoperation unit 7 is also connected thereto.

The control unit 6 changes a height of the top plate 4 by controlling anelevating operation of the raising and lowering mechanism unit 5 on thebasis of the received signal when the control unit 6 receives a raisingand lowering operating signal of the raising and lowering mechanism unit5 from the operation unit 7 while sending electric power supplied viathe power source tap 11 to the raising and lowering mechanism unit 5.Further, the unit-connecting wiring cable, the wiring cable of anoperation unit, or the like, is routed in the space section 31.

A cover member 32 configured to cover the space section 31 and having anupper surface on which a wiring can be placed is attached to theconnecting member 3 on the side of the lower surface. The cover member32 is formed by folding a metal plate, and a lengthwise dimensionthereof in the forward/rearward direction is larger than a lengthwisedimension of the connecting member 3 in the forward/rearward direction.Then, when the cover member 32 is attached to the connecting member 3 onthe side of the lower surface, the cover member 32 extends in any one offorward and rearward directions of the connecting member 3. In theembodiment, the cover member 32 extends toward a rear side of theconnecting member 3. Further, the cover member 32 may extend toward afront side of the connecting member 3 or may extend toward both of thefront and rear sides.

In addition, in the embodiment, an electronic device placing section 33is hung from the lower surface of the top plate 4. The electronic deviceplacing section 33 is formed in a tubular shape passing in theforward/rearward direction. Accordingly, the wiring of the electronicdevice installed in the electronic device placing section 33 extractedfrom the rear side of the electronic device placing section 33 can beconnected to the socket portion 11 a of the power source tap 11accommodated in the concave section 469 of the top plate 4, and thewiring extracted from above the top plate 4 to below the top plate 4through the wiring insertion hole 49 can be connected to the electronicdevice installed in the electronic device placing section 33.

Further, in the embodiment, the desk 1 with a vertically moving topplate may have a configuration as shown in FIGS. 5 and 6.

FIG. 5 is a side cross-sectional view of the top plate of the desk witha vertically moving top plate. FIG. 6 is a side cross-sectional view ofa front end portion of the top plate of the desk with a verticallymoving top plate.

As shown in FIGS. 1 and 5, the top plate 4 includes a top surface (awork surface) 4 t that forms a horizontal work surface on an uppersurface thereof. A rear end portion 4 b and side end portions 4 c and 4c of both sides in the widthwise direction of the top plate 4 are formedfrom a hanging-down surface Fv vertically hanging down from an outercircumferential end of the top surface 4 t and a folded surface Fcfolded downward from a lower end of the hanging-down surface Fv towardthe inside of the top plate 4 in the horizontal direction.

In addition, as shown in FIG. 5, a cover member 10 formed of a resin andconfigured to cover the hanging-down surface Fv is mounted on the rearend portion 4 b and the side end portions 4 c and 4 c of the top plate4.

As shown in FIGS. 5 and 6, a front end portion 4 a of the top plate 4 iscontinuous with the top surface 4 t and has an upper curved surface F1,an upper slant surface (an upper inclined section) F2, a front end uppercurved surface (a front end surface) F3, a front end lower curvedsurface (a lower inclined surface, front end surface) F4 and a lowerplane F5.

The upper curved surface F1 is formed to gradually curve downward fromthe top surface 4 t toward the front side.

The upper slant surface F2 is continuous with the upper curved surfaceF1 and formed in a planar shape inclined downward toward the front side.Here, the upper slant surface F2 is formed such that an inclinationangle downward with respect to the horizontal direction is, for example,10° to 20°, more preferably, 15° to 20°.

The front end upper curved surface F3 configures a portion of a frontend surface 4 f of the front end portion 4 a of the top plate 4, iscontinuous with the upper slant surface F2 and is formed to be curveddownward toward the front side.

The front end lower curved surface F4 configures a remaining portion ofthe front end surface of the front end portion 4 a of the top plate 4,is continuous with the front end upper curved surface F3 and is formedto be curved rearward toward the lower side.

The lower plane F5 is continuous with the front end lower curved surfaceF4 and formed to extend rearward parallel to the top surface 4 t.

As shown in FIG. 5, the top plate 4 is formed to include a base member(a support member) 211, a surface coating material (a coating material)12, a rear reinforcement member 13, an intermediate reinforcement member14 and a front reinforcement member 15.

The base member 211 is formed from a steel plate, and folded and curvedsuch that the top surface 4 t, the hanging-down surfaces Fv of the rearend portion 4 b and the side end portions 4 c, the folded surface Fc,and the upper curved surface F1, the upper slant surface F2, the frontend upper curved surface F3, the front end lower curved surface F4 andthe lower plane F5 of the front end portion 4 a are formed integrally.

As shown in FIG. 5, for example, two intermediate reinforcement members14 are formed on a lower surface 4 u of the top plate 4 with an intervaltherebetween in the forward/rearward direction. The intermediatereinforcement members 14 are formed to extend in the widthwise directionof the top plate 4. Each of the intermediate reinforcement members 14integrally includes a front joining surface 14 a and a rear joiningsurface 14 b formed along the lower surface 4 u of the top plate 4, afront surface 14 c vertically hanging down from the front joiningsurface 14 a, a rear surface 14 d vertically hanging down from the rearjoining surface 14 b, a lower surface 14 e disposed in the horizontalsurface and configured to connect a lower end of the front surface 14 cand a lower end of the rear surface 14 d. The intermediate reinforcementmember 14 is formed by folding a steel plate. The intermediatereinforcement members 14 are joined by spot welding or the like in astate in which the front joining surface 14 a and the rear joiningsurface 14 b abut against the lower surface 4 u of the top plate 4.

As shown in FIG. 6, the front reinforcement member 15 integrallyincludes a rear joining surface 15 a formed along the lower surface 4 uof the top plate 4, a rear surface 15 b vertically hanging down from therear joining surface 15 a, a lower surface 15 c extending forward from alower end of the rear surface 15 b, a step section 15 d bent upward inthe front end portion of the lower surface 15 c, front section supportsurface 15 e extending forward from the step section 15 d and formedalong an upper surface of the lower plane F5 of the base member 211, afront surface 15 f vertically extending upward from a front end of thefront section support surface 15 e, and a front inclined surface 15 gextending rearward from an upper end of the front surface 15 f to beinclined upward and formed along a lower side of the upper slant surfaceF2 of the base member 211. The front reinforcement member 15 is formedby folding a steel plate. The front reinforcement member 15 is joined tothe top plate 4 by spot welding or the like while the front sectionsupport surface 15 e, the front surface 15 f and the front inclinedsurface 15 g are inserted between the lower plane F5 of the front endportion 4 a of the top plate 4 and the upper slant surface F2 from therear side and the rear joining surface 15 a abuts the lower surface 4 uof the top plate 4.

Next, effects of the desk 1 with a vertically moving top plate accordingto the embodiment will be described with reference to the accompanyingdrawings.

In the desk 1 with a vertically moving top plate according to theembodiment, since the concave section 469 that can accommodate thesocket portion 11 a of the power source tap 11 is formed in the topplate 4, the wiring of the electronic device installed on the top plate4 can be connected to the socket portion 11 a of the power source tap11.

Then, as the socket portion 11 a of the power source tap 11 isaccommodated in the concave section 469 formed in the top plate 4, thesocket portion 11 a of the power source tap 11 can be prevented fromprotruding from the lower surface of the top plate 4.

For this reason, even if the top plate 4 approaches or comes in contactwith an article such as a wagon or the like installed below the topplate 4 when the top plate 4 is lowered, the socket portion 11 a of thepower source tap and the article can be prevented from being damagedwithout the socket portion 11 a of the power source tap 11 beingsandwiched between the top plate 4 and the article.

In addition, since the socket portion 11 a of the power source tap 11does not protrude from the lower surface of the top plate 4, it ispossible to prevent a user from coming in contact with the socketportion 11 a of the power source tap 11.

In addition, as the socket portion 11 a of the power source tap 11 ismagnetically attached on the inner surface of the concave section 469,the socket portion 11 a of the power source tap 11 can be easily fixedinto the concave section 469. In addition, a position of the socketportion 11 a of the power source tap 11 can be easily changed.

Further, in the embodiment, the socket portion 11 a of the power sourcetap 11 is configured to be magnetically attached on the secondhorizontal plate section 464, the second vertical plate section 463 andthe third vertical plate section 465 that constitute the concave section469. Then, an orientation of the socket portion 11 a of the power sourcetap 11 differs when magnetically attached on the second horizontal platesection 464, when magnetically attached on the second vertical platesection 463 and when magnetically attached on the third vertical platesection 465. For this reason, as the socket portion 11 a of the powersource tap 11 is magnetically attached on any one of the secondhorizontal plate section 464, the second vertical plate section 463 andthe third vertical plate section 465 to mach a shape of the concavesection 469 or the socket portion 11 a of the power source tap 11, thesocket portion 11 a of the power source tap 11 can be accommodated inthe concave section 469 without protruding from the concave section 469.

In addition, as the wiring insertion hole 49 through which the wiring ofthe electronic device can be inserted in the upward/downward directionis formed in the top plate 4 and the wiring insertion hole 49 isdisposed at a position overlapping the concave section 469 when seen ina plan view, the wiring of the electronic device on the top plate 4 caneasily reach the concave section 469 and simplification of the wiringcan be achieved. For this reason, the appearance of the wiring of theelectronic device can be improved and wiring of the electronic devicecan be easily performed.

In addition, since the concave section 469 extends in theleftward/rightward direction and both end portions in theleftward/rightward direction reach an edge portion of the top plate 4 inthe leftward/rightward direction, the wiring portion 11 b of the powersource tap 11 can be extracted to the outside of the top plate 4 in theleftward/rightward direction through the concave section 469. For thisreason, since the wiring portion 11 b of the power source tap 11 doesnot hang down from the top plate 4, when the top plate 4 is raised andlowered, the wiring portion 11 b of the power source tap 11 can beprevented from being hooked by an article such as a wagon or the likeinstalled below the top plate 4. In addition, since the wiring portion11 b of the power source tap 11 does not hang down from the top plate 4,it is possible to prevent a user from coming in contact with the wiringportion 11 b of the power source tap 11.

According to the desk 1 with a vertically moving top plate as configuredabove, as the upper slant surface F2 inclined forward and downward isprovided at an upper side of the front end portion 4 a of the top plate4, it is possible to prevent the front end portion 4 a of the top plate4 from biting into a user's body, arm, or the like.

Accordingly, the desk 1 with a vertically moving top plate can be usedin a pleasant use environment. Even when a user performs standing workfor a long time and the user leans forward close to the front endportion 4 a of the top plate 4, it is possible to prevent the front endportion 4 a of the top plate 4 from biting and a large force from beingapplied to a body region of a user.

In addition, the top plate 4 has the front end lower curved surface F4formed below the front end portion 4 a and inclined downward andrearward. As the above-mentioned configuration is provided, incomparison with the configuration in which the front end lower curvedsurface F4 is not formed below the front end portion 4 a of the topplate 4, a field of view to a lower space of the top plate 4 widens. Inaddition, the front end portion 4 a of the support body can be shown tobe thin, and an appearance of the top plate 4 can be improved.

Further, the operation units 7 configured to operate an elevatingoperation of the raising and lowering mechanism unit 5 are installed ata lower side of the front end portion 4 a and a rear side of the frontend lower curved surface F4 of the top plate 4. As the above-mentionedconfiguration is provided, visibility of the operation unit 7 installedbelow the front end portion 4 a of the top plate 4 is increased by thefront end lower curved surface F4.

Accordingly, operability when a user vertically elevates the top plate 4can be improved.

In addition, in the top plate 4, as the top surface 4 t, the upper slantsurface F2, the front end upper curved surface F3 and the front endlower curved surface F4 are formed to be integrally continuous with eachother, an outer surface 211 f of the top plate 4 becomes smooth.

Further, when a shape of the front end portion 4 a of the top plate 4 isformed of a wooden material, a large thickness of the front end portion4 a in the upward/downward direction needs to be provided to secure thestrength for the front end portion 4 a, for example. On the other hand,when the top plate 4 is constituted by a base member 21 formed of steel,and the surface coating material 12, the strength for the top plate 4can be secured while reducing a thickness of the front end portion 4 aof the top plate 4 such it becomes thin.

In addition, in the desk 1 with a vertically moving top plate includingthe above-mentioned top plate 4, the leg bodies 2 have the raising andlowering mechanism units 5 provided at the intermediate section of thetop plate 4. In this way, in the case in which the raising and loweringmechanism units 5 that constitute columns of the leg bodies 2 aredisposed at the intermediate section of the top plate 4 in theforward/rearward direction, when a load is applied to the front endportion 4 a of the top plate 4, a large moment is applied to the raisingand lowering mechanism unit 5. In particular, in the desk 1 with avertically moving top plate in which the top plate 4 can be raised andlowered, when the top plate 4 is raised and lowered, if a load isapplied to the front end portion 4 a of the top plate 4,anti-overturning properties deteriorate.

On the other hand, since the upper slant surface F2 is formed on thefront end portion 4 a of the top plate 4, when a user's hand or anarticle is placed on the top plate 4, the user's hand or the articlecannot be easily placed on the upper slant surface F2. Accordingly, aregion where the load is applied is a region behind the upper slantsurface F2 due to disposition of the hand or the article placed on thetop plate 4. Accordingly, an action point of the load is disposed closerto the raising and lowering mechanism unit 5, and a moment applied tothe raising and lowering mechanism unit 5 is reduced. Accordingly,anti-overturning properties of the desk 1 with a vertically moving topplate can be improved.

In addition, in the top plate 4, the upper slant surface F2 is formed onthe front end portion 4 a only, and the rear end portion 4 b and theside end portions 4 c are formed by the hanging-down surface Fv.Accordingly, when the rear end portion 4 b or the side end portions 4 cof the desk 1 with a vertically moving top plate is disposed to abutagainst the wall surface, other household goods, or the like, a gap or aconcave section cannot be easily generated between the rear end portion4 b or the side end portions 4 c of the top plate 4 and the wall surfaceor the other household goods. As a result, the article can be preventedfrom falling off from the top plate 4.

Hereinabove, while the embodiment of the desk 1 with a vertically movingtop plate according to the present invention has been described, thepresent invention is not limited to the embodiment and may beappropriately modified without departing from the spirit of the presentinvention.

For example, while the desk 1 with a vertically moving top plate isconfigured to have the pair of raising and lowering mechanism units 5and 5 and the control unit 6 and the top plate 4 can be raised andlowered by an operation of the operation unit 7 in the embodiment, themechanism configured to raise and lower the top plate 4 may be, forexample, a mechanism using a gas spring, a gear, or the like, inaddition thereto.

In addition, while the embodiment has a configuration in which the topplate 4 has the core 41 formed by processing a metal plate such as asteel plate or the like, and the surface material 42 such as a melamineboard or the like configured to cover the surface of the core 41, thetop plate 4 may be constituted by a plywood formed of wood as long asthe concave section configured to accommodate the socket portion 11 a ofthe power source tap 11 is formed.

In addition, while the concave section 469 extends in theleftward/rightward direction and is formed at a rear side of the topplate 4 in the embodiment, a shape or a place formed with respect to thetop plate 4 may be appropriately set.

In addition, while the inner surface of the concave section 469 has amagnetic property in the embodiment, the magnetic property may not beprovided. In this case, the socket portion 11 a of the power source tap11 may be fixed to the concave section 469 by a fixing tool such as ascrew, a hook formed in the concave section 469, or the like. Inaddition, a plate member on which the socket portion 11 a of the powersource tap 11 can be placed may be installed below the concave section469.

In addition, in the embodiment, the second horizontal plate section 464,the second vertical plate section 463 and the third vertical platesection 465 that constitute the concave section 469 have a magneticproperty, the socket portion 11 a of the power source tap 11 ismagnetically attached on the sections, and a portion of the innersurface of the concave section 469 has a magnetic property. The socketportion of the power source tap 11 may be magnetically attached on theportion having a magnetic property.

In addition, while the wiring insertion hole 49 is formed in the topplate 4 in the embodiment, the wiring insertion hole 49 may be notformed.

In addition, while the two wiring insertion holes 49 are formed atpositions overlapping the concave section 469 when seen in a plan viewin the embodiment, the wiring insertion holes 49 may be formed atpositions that do not overlap the concave section 469 when seen in aplan view and the number of wiring insertion holes 49 formed in the topplate 4 may be appropriately set.

In addition, while the concave section 469 extends in theleftward/rightward direction, both end portions in theleftward/rightward direction reach the edge portion of the top plate 4in the leftward/rightward direction and the wiring portion 11 b of thepower source tap 11 is extracted to the outside of the top plate 4 inthe leftward/rightward direction through the concave section 469 in theembodiment, the wiring portion 11 b of the power source tap 11 may beextracted to the lower side or the outer side of the top plate 4 withoutpassing through the concave section 469.

In addition, for example, while the upper slant surface F2 is formed asthe upper inclined section of the front end portion 4 a of the top plate4 in the embodiment, the upper inclined section is not limited to aplanar inclined surface and may be a curved surface as long as the upperinclined surface may be inclined forward and downward. Similarly, thelower inclined surface formed on the front end portion 4 a is also notlimited to the front end lower curved surface F4 and a planar inclinedsurface may be formed as long as the lower inclined surface is inclineddownward and rearward.

In addition, while the upper slant surface F2 is formed on only thefront end portion 4 a of the top plate 4 in the embodiment, there is nolimitation thereto. According to a use type of the desk 1 with avertically moving top plate, a configuration in which the upper slantsurface F2, the front end lower curved surface F4, and so on, are formedon the rear end portion 4 b or the side end portions 4 c of the topplate 4 in the same manner may be provided.

In addition, the desk 1 with a vertically moving top plate may have anyother configuration such as any configuration, disposition, number ofinstalled leg bodies 2, and so on, as long as the top plate 4 can beraised and lowered.

In addition, the configuration of the raising and lowering mechanismunit 5 may be any other configuration as long as the top plate 4 can beraised and lowered.

INDUSTRIAL APPLICABILITY

According to the desk with a vertically moving top plate of the presentinvention, the power source tap installed below the top plate can beprevented from coming in contact with an article such as a wagon or thelike installed below the top plate or a user.

REFERENCE SIGNS LIST

-   -   1 Desk with a vertically moving top plate    -   2 Leg bodies (leg parts)    -   3 Connecting member    -   4 Top plate    -   5 Raising and lowering mechanism unit (raising and lowering        mechanism)    -   11 Power source tap    -   11 a Socket portion    -   11 b Wiring portion    -   49 Wiring insertion hole (hole section)    -   464 Second horizontal plate section (bottom surface section)    -   463 Second vertical plate section (side surface section)    -   465 Third vertical plate section (side surface section)    -   469 Concave section

1. A desk with a vertically moving top plate having a top plate, legparts disposed on a floor surface and configured to support the topplate to raise and lower such that it is able to be raised and lowered,and a raising and lowering mechanism configured to raise and lower thetop plate, wherein a concave section opening downward and configured toaccommodate a socket portion of a power source tap to which anelectronic device is able to be connected is formed in the top plate. 2.The desk with a vertically moving top plate according to claim 1,wherein the socket portion of the power source tap is magneticallyattached on an inner surface of the concave section.
 3. The desk with avertically moving top plate according to claim 2, wherein the innersurface of the concave section has a bottom surface section parallel tothe floor surface on which the desk with a vertically moving top plateis disposed, and side surface sections extending downward from thebottom surface section, and the socket portion of the power source tapis magnetically attached on at least one of the bottom surface sectionand the side surface section.
 4. The desk with a vertically moving topplate according to claim 1, wherein a hole section through which awiring of an electronic device passes in an upward/downward direction isformed in the top plate, and the hole section is disposed at a positionoverlapping the concave section when seen in a plan view.
 5. The deskwith a vertically moving top plate according to claim 2, wherein a holesection through which a wiring of an electronic device passes in anupward/downward direction is formed in the top plate, and the holesection is disposed at a position overlapping the concave section whenseen in a plan view.
 6. The desk with a vertically moving top plateaccording to claim 3, wherein a hole section through which a wiring ofan electronic device passes in an upward/downward direction is formed inthe top plate, and the hole section is disposed at a positionoverlapping the concave section when seen in a plan view.
 7. The deskwith a vertically moving top plate according to claim 1, wherein theconcave section extends such that at least one end portion in anextension direction reaches an edge portion of the top plate, and awiring portion of the power source tap is extracted to the outside ofthe top plate from the edge portion of the top plate through the concavesection.
 8. The desk with a vertically moving top plate according toclaim 6, wherein the concave section extends such that at least one endportion in an extension direction reaches an edge portion of the topplate, and a wiring portion of the power source tap is extracted to theoutside of the top plate from the edge portion of the top plate throughthe concave section.